These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.

More From This Category

AFR BBC 24° 11/32 Intake Guide (2017 -Present), Set

AFR BBC 24° 11/32 Intake Guide (2017 -Present), Set

$179.83

MANLEY Valve Spring Retainer, Titanium, Super 7 Degree, 1.660 in. OD, Lightweight, Triple, Each

MANLEY Valve Spring Retainer, Titanium, Super 7 Degree, 1.660 in. OD, Lightweight, Triple, Each

$55.61

Crow Cams 1.437"x.780" HARD SHIM

Crow Cams 1.437"x.780" HARD SHIM

$2.09

MANLEY Lash Cap, .2754 in. Valve Stem, .085 in. Thick, Each

MANLEY Lash Cap, .2754 in. Valve Stem, .085 in. Thick, Each

$6.22

MANLEY Valve Spring Retainer, Titanium, 7 Degree, +.100 in. Height, 1.660 in. OD, Each

MANLEY Valve Spring Retainer, Titanium, 7 Degree, +.100 in. Height, 1.660 in. OD, Each

$35.37

Sonnax Boost Valve Kit, Ford, AOD, Hp & Heavy Duty, Each

Sonnax Boost Valve Kit, Ford, AOD, Hp & Heavy Duty, Each

$84.72